Vulnerability Description
A heap-based buffer overflow vulnerability exists in the Hword HwordApp.dll functionality of Hancom Office 2020 11.0.0.2353. A specially-crafted malformed file can lead to memory corruption and potential arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hancom | Hancom Office 2020 | 11.0.0.2353 |
Related Weaknesses (CWE)
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1386ExploitThird Party Advisory
- https://blog.talosintelligence.com/2022/02/vuln-spotlight-.htmlExploitThird Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1386ExploitThird Party Advisory
FAQ
What is CVE-2021-21958?
CVE-2021-21958 is a vulnerability with a CVSS score of 7.8 (HIGH). A heap-based buffer overflow vulnerability exists in the Hword HwordApp.dll functionality of Hancom Office 2020 11.0.0.2353. A specially-crafted malformed file can lead to memory corruption and potent...
How severe is CVE-2021-21958?
CVE-2021-21958 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-21958?
Check the references section above for vendor advisories and patch information. Affected products include: Hancom Hancom Office 2020.